Improvement in flour and grain elevators



UNITED- STATES PATENT OFFICE.

HENRY STANLEY, OF ST. JOHNSBURY, VERMONT, ASSIGNOR T0 STANLEY St TARBLE.

IMPROVEMENT |N FLOUP. AND GRAIN sLEvAi-oas.

Specification forming part of Letters Patent No. 40,313, dated October13, 1863.

To all whom it may concern:

Be it known that I,.HENRY STANLEY, of St. J ohnsbury, in the county ofCaledonia and State of Vermont, have invented a new and Improved Mode ofElevating, Conveying, Cooling, and Airing Flour, Meal, Grain, Src.; andI do hereby declare the following to be ,a full and exact description ofthe same, reference being had to the accompanying drawings, making partot' this speciiieation, in which- Figure l is a perspective view of theinterior of a mill, illustrating the application of my invention; andFig. 2 is an end eleva-tion thereof. l

This invention consists, first, in devices for elevating and conveyingdeur, meal, grain, 8vo., by the pressure of the atmosphere, which iscaused to exert 'the requisite propelling force by use in connection:with arret-ary f an,

as will Vbe hereinafter explained; second, in an improved reservoir orreceiver for cooling and airing said flour, Ste.

In order that others skilled in the art to which my invention appertainsmay be ena-A bled to fully understand and use the same, I will proceedto describe its construction and operation.'

In Fig. l ofthe accompanying drawings, A may represent a curb, whichcovers the millstones, and B a pulley upon the lower end of the spindle,upon which the runnerstone` is mounted and rotated. y

E represents a cylindrical box or casing, in which a rotary fan isadapted to operate.

F is a tube or trough for conveying the ileur or meal to the fan-casingE, iutowhich it is deposited through a suitable aperture.

G G may represent perforations for supplying air to theinterior of thecasing E.

H H H is a pipe or tube for conducting the i-our fromf'the fan to thereceiver or reservoir` .I I I. Upon this reservoir is erected aframe, JJ J J J, over which Aa covering of gauze or analogous material issecured, for the purposel flows from the under side of the receiver I tothe bolt L.

In Fig 2 is represented a heater or jolter, 'composed of jointed arms NN N N', the latter of which is pivoted to the Hoor of the mill andcaused to oscillate when the mill is going, so as to operate thestriking-arm of the beater by a pin projeetin g from the pulley S,through, which motion is communicated to the bolt L and a spiral spring,attached at one end tothe upper end of the vertical arm N and at theother, near the footofa standard, P, ri singfrom the door of the mill.The upper horizontal arm, N, works through a corresponding aperture inthe standard P.

Motion is communicated from the pulley l.

' to' which the fan is attached;

0 is a vertical shaft provided with a pulley near its upper and lowerend, respectively, through the medium of which rotation is imparted tothe bolt L by bands Q and It.

' Operation Power being applied to the shaft of the runnerstone, theilour tlous through the tube F into the interior of the easing E, whenceit is forced up the pipe or tube H- by the fan within said casing, andis received into the'reservoir I. The air, which the action ot' the ,fancondenses, then assumes its Voriginal expanded state and i passesthrough the gauze covering of the frame J, while the liour remains inthe reservoir I a sufficient length of time to be cooled, aired, and`otherwise benefited by the action ot' the atmosphere, tliegauzecovering ot' the frame J admitting a free circulation ot' air to promotethis object. Theblast generated by the fan is assisted in the elevationot' the flour by.' the pressure of the atmosphere, consequent upon thepartial vacuum created by the successive revolutions of the fan. By-thecombined action of these two forces the iiour, meal, grain, or otherarticle to be treated may be elevated or conveyed to the receiver orother depository with the greatest possible celerity. Each revolution ofthe pulley S is followed by a stroke from the upper horizontal arm, N,of the beater 'against the reeei ver l which prevents-the iiour fromclogging thereimand causes it to flow regularly into the bolt L.

. Having thus described my invention, tlic yfollowing is what I claim asnew therein and ducting-tubes F and H, rotary fan, and casing E', tliereceiver I J M, operated as described, and partially covered with gauzeor other porous material, for cooling and Aairing the article beingtreated previous to passing into the bolt L.

' HENRY STANLEY.

Witnesses: Y HELEN A. TARBLE, WM. BELL

